MDL
GPT-5.5 Instant (May 2026)
OpenAI
Verified against Artificial Analysis · Jul 13, 2026
Capability
87
percentile index
Price /M
$5 / $30
in / out
Context
—
Avg score
53.4
4 benchmarks
AA Intelligence
28.9
index
Weights
Closed
Released
Jun 25, 2026
About
GPT-5.5 Instant (May 2026) is a proprietary model in the GPT family from OpenAI. Benchmarked on 4 evals, averaging 53.4.
Benchmark scores · 4
avg 53.4 — higher is betterPerformance & price
Price in / out$5 / $30 per 1M
Blended price$11.25 / 1M
Coding index39.4
Median across API providers, via Artificial Analysis. Blended = 3:1 input:output. For reasoning models, latency includes thinking time. Methodology →
History
full ledger →Capability over time
AA Long-Context Reasoning55.7 → 64
13d ago
SciCode50.3 → 48.6
13d ago
Humanity's Last Exam20.3 → 18.6
13d ago
GPQA Diamond84.6 → 82.3
13d ago
Append-only ledger — every observed change to this model's numbers.
API providers
Artificial Analysis$30/M